AQSQID: 401090097

Site Name: Near Road Okc

Location: Oklahoma City, OK

Reporting: True, Located: True

Current AQI: 83.0

Oklahoma City OK, US: 35.502968, -97.577674

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 34.0 μg/m3 (31) 27.3 μg/m3 (83) 83.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 31.0 μg/m3 (28) 23.7 μg/m3 (75) 75.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 26.0 μg/m3 (24) 19.9 μg/m3 (67) 67.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 21.0 μg/m3 (19) 15.4 μg/m3 (57) 57.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 19.0 μg/m3 (17) 14.2 μg/m3 (55) 55.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 μg/m3 (21) 12.2 μg/m3 (50) 50.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 μg/m3 (21) 11.1 μg/m3 (46) 46.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 24.0 μg/m3 (22) 11.8 μg/m3 (49) 49.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 29.0 μg/m3 (26) 12.0 μg/m3 (50) 50.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 29.0 μg/m3 (26) 14.1 μg/m3 (54) 54.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 29.0 μg/m3 (26) 16.5 μg/m3 (60) 60.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 32.0 μg/m3 (29) 13.6 μg/m3 (53) 53.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 35.0 μg/m3 (32) 14.2 μg/m3 (55) 55.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 30.0 μg/m3 (27) 10.4 μg/m3 (43) 43.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 27.0 μg/m3 (25) 8.8 μg/m3 (37) 37.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 31.0 μg/m3 (28) 9.1 μg/m3 (38) 38.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 28.0 μg/m3 (25) 9.1 μg/m3 (38) 38.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 33.0 μg/m3 (30) 10.7 μg/m3 (45) 45.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 34.0 μg/m3 (31) 11.1 μg/m3 (46) 46.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 35.0 μg/m3 (32) 12.3 μg/m3 (51) 51.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 42.0 μg/m3 (38) 15.9 μg/m3 (58) 58.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 44.0 μg/m3 (40) 16.2 μg/m3 (59) 59.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 45.0 μg/m3 (41) 14.9 μg/m3 (56) 56.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 66.0 μg/m3 (56) 26.9 μg/m3 (82) 82.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 54.0 μg/m3 (49) 22.8 μg/m3 (73) 73.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 28.0 μg/m3 (25) 10.4 μg/m3 (43) 43.0
 
March 22, 2019, 10 a.m. 49.0 ppb (45) 27.0 ppb (25) N/A 22.0 ppb (20) N/A N/A N/A 0.3 ppb (3) 21.0 μg/m3 (19) 8.5 μg/m3 (35) 45.0
 
March 22, 2019, 9 a.m. 47.0 ppb (44) 25.0 ppb (23) N/A 22.0 ppb (20) N/A N/A N/A 0.3 ppb (3) 26.0 μg/m3 (24) 9.6 μg/m3 (40) 44.0
 
March 22, 2019, 8 a.m. 38.0 ppb (35) 16.0 ppb (15) N/A 21.0 ppb (19) N/A N/A N/A 0.3 ppb (3) 24.0 μg/m3 (22) 8.9 μg/m3 (37) 37.0
 
March 22, 2019, 7 a.m. 39.0 ppb (36) 16.0 ppb (15) N/A 23.0 ppb (21) N/A N/A N/A 0.3 ppb (3) 22.0 μg/m3 (20) 6.7 μg/m3 (28) 36.0
 
March 22, 2019, 6 a.m. 37.0 ppb (34) 12.0 ppb (11) N/A 24.0 ppb (22) N/A N/A N/A 0.3 ppb (3) 23.0 μg/m3 (21) 6.4 μg/m3 (27) 34.0
 
March 22, 2019, 5 a.m. 36.0 ppb (33) 8.0 ppb (7) N/A 27.0 ppb (25) N/A N/A N/A 0.3 ppb (3) 36.0 μg/m3 (33) 7.5 μg/m3 (31) 33.0
 
March 22, 2019, 4 a.m. 40.0 ppb (37) 13.0 ppb (12) N/A 27.0 ppb (25) N/A N/A N/A 0.4 ppb (4) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 37.0
 
March 22, 2019, 3 a.m. 42.0 ppb (39) 16.0 ppb (15) N/A 26.0 ppb (24) N/A N/A N/A 0.4 ppb (4) 24.0 μg/m3 (22) 5.8 μg/m3 (24) 39.0
 
March 22, 2019, 2 a.m. 23.0 ppb (21) 4.0 ppb (4) N/A 19.0 ppb (18) N/A N/A N/A 0.1 ppb (1) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 1 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 4.1 μg/m3 (17) 17.0
 
March 22, 2019, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.0 ppb (0) 12.0 μg/m3 (11) 3.4 μg/m3 (14) 14.0
 
March 21, 2019, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
March 21, 2019, 10 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.0 ppb (0) 19.0 μg/m3 (17) 8.6 μg/m3 (36) 36.0
 
March 21, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 12.0 μg/m3 (11) 3.8 μg/m3 (16) 16.0
 
March 21, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 12.0 μg/m3 (11) 3.9 μg/m3 (16) 16.0
 
March 21, 2019, 7 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.0 ppb (0) 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
March 21, 2019, 6 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 11.0 μg/m3 (10) 4.9 μg/m3 (20) 20.0
 
March 21, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
March 21, 2019, 4 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 3 p.m. 13.0 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.0 ppb (0) 17.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
March 21, 2019, 2 p.m. 30.0 ppb (28) 14.0 ppb (13) N/A 15.0 ppb (14) N/A N/A N/A 0.1 ppb (1) 19.0 μg/m3 (17) 9.2 μg/m3 (38) 38.0
 
March 21, 2019, 1 p.m. 44.0 ppb (41) 23.0 ppb (21) N/A 21.0 ppb (19) N/A N/A N/A 0.2 ppb (2) 21.0 μg/m3 (19) 9.4 μg/m3 (39) 41.0
 
March 21, 2019, noon 32.0 ppb (30) 7.0 ppb (6) N/A 24.0 ppb (22) N/A N/A N/A 0.1 ppb (1) 18.0 μg/m3 (16) 8.4 μg/m3 (35) 35.0
 
March 21, 2019, 11 a.m. 18.0 ppb (17) 2.0 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
March 21, 2019, 10 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
March 21, 2019, 9 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 8 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
March 21, 2019, 7 a.m. 19.0 ppb (18) 0.0 ppb (0) N/A 19.0 ppb (18) N/A N/A N/A 0.0 ppb (0) 23.0 μg/m3 (21) 9.9 μg/m3 (41) 41.0
 
March 21, 2019, 6 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A N/A N/A 0.0 ppb (0) 18.0 μg/m3 (16) 7.5 μg/m3 (31) 31.0
 
March 21, 2019, 5 a.m. 40.0 ppb (37) 11.0 ppb (10) N/A 29.0 ppb (27) N/A N/A N/A 0.4 ppb (4) 27.0 μg/m3 (25) 13.5 μg/m3 (53) 53.0
 
March 21, 2019, 4 a.m. 56.0 ppb (52) 25.0 ppb (23) N/A 31.0 ppb (29) N/A N/A N/A 0.6 ppb (7) 32.0 μg/m3 (29) 14.7 μg/m3 (56) 56.0
 
March 21, 2019, 3 a.m. 53.0 ppb (49) 19.0 ppb (18) N/A 33.0 ppb (31) N/A N/A N/A 0.6 ppb (7) 41.0 μg/m3 (37) 21.5 μg/m3 (70) 70.0
 
March 21, 2019, 2 a.m. 30.0 ppb (28) 2.0 ppb (2) N/A 28.0 ppb (26) N/A N/A N/A 0.4 ppb (4) 49.0 μg/m3 (45) 20.1 μg/m3 (67) 67.0
 
March 21, 2019, 1 a.m. 16.0 ppb (15) 0.0 ppb (0) N/A 16.0 ppb (15) N/A N/A N/A 0.1 ppb (1) 21.0 μg/m3 (19) 10.6 μg/m3 (44) 44.0
 
March 21, 2019, midnight 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
March 20, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
March 20, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.0 ppb (0) 17.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
March 20, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.0 ppb (0) 11.0 μg/m3 (10) 5.4 μg/m3 (23) 23.0
 
March 20, 2019, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 21.0
 
March 20, 2019, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0 μg/m3 (10) 6.6 μg/m3 (28) 28.0
 
March 20, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.0 ppb (0) 11.0 μg/m3 (10) 7.6 μg/m3 (32) 32.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 μg/m3 (10) 7.7 μg/m3 (32) 32.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 μg/m3 (11) 9.1 μg/m3 (38) 38.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 10.5 μg/m3 (44) 44.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 μg/m3 (15) 12.8 μg/m3 (52) 52.0
 
March 20, 2019, 1 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.1 ppb (1) 17.0 μg/m3 (15) 13.5 μg/m3 (53) 53.0
 
March 20, 2019, noon 9.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.1 ppb (1) 17.0 μg/m3 (15) 13.2 μg/m3 (53) 53.0
 
March 20, 2019, 11 a.m. 33.0 ppb (31) 18.0 ppb (17) N/A 14.0 ppb (13) N/A N/A N/A 0.3 ppb (3) 26.0 μg/m3 (24) 16.3 μg/m3 (59) 59.0
 
March 20, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 17.0 μg/m3 (15) 13.4 μg/m3 (53) 53.0
 
March 20, 2019, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.0 ppb (0) 18.0 μg/m3 (16) 14.0 μg/m3 (54) 54.0
 
March 20, 2019, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 19.0 μg/m3 (17) 14.4 μg/m3 (55) 55.0
 
March 20, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 20.0 μg/m3 (18) 14.6 μg/m3 (56) 56.0
 
March 20, 2019, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 18.0 μg/m3 (16) 11.9 μg/m3 (50) 50.0
 
March 20, 2019, 5 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 17.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
March 20, 2019, 4 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 8.2 μg/m3 (34) 34.0
 
March 20, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
March 20, 2019, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 5.5 μg/m3 (23) 23.0
 
March 20, 2019, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 24.0 μg/m3 (22) 7.8 μg/m3 (32) 32.0
 
March 20, 2019, midnight 18.0 ppb (17) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.1 ppb (1) 21.0 μg/m3 (19) 7.9 μg/m3 (33) 33.0
 
March 19, 2019, 11 p.m. 15.0 ppb (14) 6.0 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A 0.1 ppb (1) 22.0 μg/m3 (20) 8.1 μg/m3 (34) 34.0
 
March 19, 2019, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 20.0 μg/m3 (18) 8.1 μg/m3 (34) 34.0
 
March 19, 2019, 9 p.m. 12.0 ppb (11) 5.0 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 26.0 μg/m3 (24) 8.9 μg/m3 (37) 37.0
 
March 19, 2019, 8 p.m. 21.0 ppb (19) 10.0 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.1 ppb (1) 28.0 μg/m3 (25) 8.7 μg/m3 (36) 36.0
 
March 19, 2019, 7 p.m. 11.0 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 25.0 μg/m3 (23) 8.3 μg/m3 (35) 35.0
 
March 19, 2019, 6 p.m. 14.0 ppb (13) 6.0 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.1 ppb (1) 40.0 μg/m3 (36) 8.6 μg/m3 (36) 36.0
 
March 19, 2019, 5 p.m. 13.0 ppb (12) 6.0 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.1 ppb (1) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 4 p.m. 37.0 ppb (34) 20.0 ppb (19) N/A 16.0 ppb (15) N/A N/A N/A 0.2 ppb (2) 51.0 μg/m3 (46) 11.3 μg/m3 (47) 47.0
 
March 19, 2019, 3 p.m. 47.0 ppb (44) 25.0 ppb (23) N/A 21.0 ppb (19) N/A N/A N/A 0.2 ppb (2) 48.0 μg/m3 (44) 13.6 μg/m3 (53) 53.0
 
March 19, 2019, 2 p.m. 69.0 ppb (66) 43.0 ppb (40) N/A 26.0 ppb (24) N/A N/A N/A 0.4 ppb (4) 48.0 μg/m3 (44) 16.9 μg/m3 (60) 66.0
 
March 19, 2019, 1 p.m. 87.0 ppb (85) 55.0 ppb (51) N/A 32.0 ppb (30) N/A N/A N/A 0.6 ppb (7) 67.0 μg/m3 (56) 20.5 μg/m3 (68) 85.0
 
March 19, 2019, noon 105.0 ppb (101) 66.0 ppb (63) N/A 39.0 ppb (36) N/A N/A N/A 0.7 ppb (8) 54.0 μg/m3 (49) 18.3 μg/m3 (63) 101.0
 
March 19, 2019, 11 a.m. 77.0 ppb (74) 41.0 ppb (38) N/A 36.0 ppb (33) N/A N/A N/A 0.5 ppb (6) 41.0 μg/m3 (37) 16.4 μg/m3 (59) 74.0
 
March 19, 2019, 10 a.m. 22.0 ppb (20) 1.0 ppb (1) N/A 20.0 ppb (19) N/A N/A N/A 0.2 ppb (2) 30.0 μg/m3 (27) 13.5 μg/m3 (53) 53.0
 
March 19, 2019, 9 a.m. 39.0 ppb (36) 10.0 ppb (9) N/A 29.0 ppb (27) N/A N/A N/A 0.2 ppb (2) 30.0 μg/m3 (27) 14.1 μg/m3 (54) 54.0
 
March 19, 2019, 8 a.m. 19.0 ppb (18) 1.0 ppb (1) N/A 18.0 ppb (17) N/A N/A N/A 0.1 ppb (1) 30.0 μg/m3 (27) 13.7 μg/m3 (54) 54.0
 
March 19, 2019, 7 a.m. 23.0 ppb (21) 2.0 ppb (2) N/A 21.0 ppb (19) N/A N/A N/A 0.1 ppb (1) 34.0 μg/m3 (31) 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 6 a.m. 23.0 ppb (21) 0.0 ppb (0) N/A 23.0 ppb (21) N/A N/A N/A 0.2 ppb (2) 31.0 μg/m3 (28) 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 5 a.m. 38.0 ppb (35) 4.0 ppb (4) N/A 33.0 ppb (31) N/A N/A N/A 0.4 ppb (4) 35.0 μg/m3 (32) 12.7 μg/m3 (51) 51.0
 
March 19, 2019, 4 a.m. 35.0 ppb (32) 1.0 ppb (1) N/A 33.0 ppb (31) N/A N/A N/A 0.4 ppb (4) 33.0 μg/m3 (30) 13.2 μg/m3 (53) 53.0
 
March 19, 2019, 3 a.m. 39.0 ppb (36) 7.0 ppb (6) N/A 32.0 ppb (30) N/A N/A N/A 0.3 ppb (3) 33.0 μg/m3 (30) 11.3 μg/m3 (47) 47.0
 
March 19, 2019, 2 a.m. 47.0 ppb (44) 12.0 ppb (11) N/A 35.0 ppb (32) N/A N/A N/A 0.4 ppb (4) 42.0 μg/m3 (38) 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 1 a.m. 62.0 ppb (59) 26.0 ppb (24) N/A 36.0 ppb (33) N/A N/A N/A 0.4 ppb (4) 35.0 μg/m3 (32) 11.3 μg/m3 (47) 59.0
 
March 19, 2019, midnight 49.0 ppb (45) 19.0 ppb (18) N/A 29.0 ppb (27) N/A N/A N/A 0.4 ppb (4) 37.0 μg/m3 (34) 11.1 μg/m3 (46) 46.0
 
March 18, 2019, 11 p.m. 33.0 ppb (31) 12.0 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A 0.2 ppb (2) 32.0 μg/m3 (29) 11.6 μg/m3 (48) 48.0
 
March 18, 2019, 10 p.m. 32.0 ppb (30) 12.0 ppb (11) N/A 19.0 ppb (18) N/A N/A N/A 0.2 ppb (2) 34.0 μg/m3 (31) 11.1 μg/m3 (46) 46.0
 
March 18, 2019, 9 p.m. 21.0 ppb (19) 8.0 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.1 ppb (1) 32.0 μg/m3 (29) 11.4 μg/m3 (48) 48.0
 
March 18, 2019, 8 p.m. 27.0 ppb (25) 12.0 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.2 ppb (2) 35.0 μg/m3 (32) 13.8 μg/m3 (54) 54.0
 
March 18, 2019, 7 p.m. 23.0 ppb (21) 9.0 ppb (8) N/A 14.0 ppb (13) N/A N/A N/A 0.2 ppb (2) 40.0 μg/m3 (36) 18.8 μg/m3 (64) 64.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 36.0 μg/m3 (33) 15.4 μg/m3 (57) 57.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 33.0 μg/m3 (30) 11.9 μg/m3 (50) 50.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 33.0 μg/m3 (30) 12.6 μg/m3 (51) 51.0
 
March 18, 2019, 3 p.m. 75.0 ppb (72) 45.0 ppb (42) N/A 29.0 ppb (27) N/A N/A N/A 0.4 ppb (4) 35.0 μg/m3 (32) 14.1 μg/m3 (54) 72.0
 
March 18, 2019, 2 p.m. 105.0 ppb (101) 75.0 ppb (72) N/A 29.0 ppb (27) N/A N/A N/A 0.7 ppb (8) 43.0 μg/m3 (39) 14.2 μg/m3 (55) 101.0
 
March 18, 2019, 1 p.m. 86.0 ppb (84) 61.0 ppb (57) N/A 24.0 ppb (22) N/A N/A N/A 0.8 ppb (9) 36.0 μg/m3 (33) 11.1 μg/m3 (46) 84.0
 
March 18, 2019, noon 46.0 ppb (43) 21.0 ppb (19) N/A 24.0 ppb (22) N/A N/A N/A 0.5 ppb (6) 36.0 μg/m3 (33) 10.7 μg/m3 (45) 45.0
 
March 18, 2019, 11 a.m. 28.0 ppb (26) 7.0 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.2 ppb (2) 27.0 μg/m3 (25) 9.1 μg/m3 (38) 38.0
 
March 18, 2019, 10 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A N/A 0.1 ppb (1) 24.0 μg/m3 (22) 9.4 μg/m3 (39) 39.0
 
March 18, 2019, 9 a.m. 24.0 ppb (22) 2.0 ppb (2) N/A 22.0 ppb (20) N/A N/A N/A 0.1 ppb (1) 25.0 μg/m3 (23) 11.8 μg/m3 (49) 49.0
 
March 18, 2019, 8 a.m. 19.0 ppb (18) 0.0 ppb (0) N/A 19.0 ppb (18) N/A N/A N/A 0.1 ppb (1) 31.0 μg/m3 (28) 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 7 a.m. 14.0 ppb (13) 0.0 ppb (0) N/A 13.0 ppb (12) N/A N/A N/A 0.1 ppb (1) 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 6 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.1 ppb (1) 30.0 μg/m3 (27) 12.3 μg/m3 (51) 51.0
 
March 18, 2019, 5 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A 0.0 ppb (0) 23.0 μg/m3 (21) 9.3 μg/m3 (39) 39.0
 
March 18, 2019, 4 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.0 ppb (0) 23.0 μg/m3 (21) 9.3 μg/m3 (39) 39.0
 
March 18, 2019, 3 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A N/A 0.0 ppb (0) 22.0 μg/m3 (20) 8.5 μg/m3 (35) 35.0
 
March 18, 2019, 2 a.m. 17.0 ppb (16) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.1 ppb (1) 25.0 μg/m3 (23) 10.3 μg/m3 (43) 43.0
 
March 18, 2019, 1 a.m. 18.0 ppb (17) 2.0 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 0.1 ppb (1) 21.0 μg/m3 (19) 7.7 μg/m3 (32) 32.0
 
March 18, 2019, midnight 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.1 ppb (1) 17.0 μg/m3 (15) 5.9 μg/m3 (25) 25.0
 
March 17, 2019, 11 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
March 17, 2019, 10 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.0 ppb (0) 12.0 μg/m3 (11) 4.4 μg/m3 (18) 18.0
 
March 17, 2019, 8 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.0 ppb (0) 13.0 μg/m3 (12) 4.5 μg/m3 (19) 19.0
 
March 17, 2019, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 11.0 μg/m3 (10) 4.2 μg/m3 (18) 18.0
 
March 17, 2019, 6 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 13.0 μg/m3 (12) 3.9 μg/m3 (16) 16.0
 
March 17, 2019, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 4.3 μg/m3 (18) 18.0
 
March 17, 2019, 4 p.m. 11.0 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 5.5 μg/m3 (23) 23.0
 
March 17, 2019, 3 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 19.0 μg/m3 (17) 5.8 μg/m3 (24) 24.0
 
March 17, 2019, 2 p.m. 17.0 ppb (16) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.1 ppb (1) 15.0 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
March 17, 2019, 1 p.m. 64.0 ppb (61) 40.0 ppb (37) N/A 24.0 ppb (22) N/A N/A N/A 0.4 ppb (4) 27.0 μg/m3 (25) 14.7 μg/m3 (56) 61.0
 
March 17, 2019, noon 65.0 ppb (62) 41.0 ppb (38) N/A 24.0 ppb (22) N/A N/A N/A 0.5 ppb (6) 29.0 μg/m3 (26) 17.3 μg/m3 (61) 62.0
 
March 17, 2019, 11 a.m. 64.0 ppb (61) 38.0 ppb (35) N/A 26.0 ppb (24) N/A N/A N/A 0.4 ppb (4) 31.0 μg/m3 (28) 18.0 μg/m3 (63) 63.0
 
March 17, 2019, 10 a.m. 45.0 ppb (42) 16.0 ppb (15) N/A 28.0 ppb (26) N/A N/A N/A 0.3 ppb (3) 26.0 μg/m3 (24) 15.6 μg/m3 (58) 58.0
 
March 17, 2019, 9 a.m. 35.0 ppb (32) 6.0 ppb (6) N/A 28.0 ppb (26) N/A N/A N/A 0.3 ppb (3) 26.0 μg/m3 (24) 15.4 μg/m3 (57) 57.0
 
March 17, 2019, 8 a.m. 22.0 ppb (20) 1.0 ppb (1) N/A 21.0 ppb (19) N/A N/A N/A 0.2 ppb (2) 25.0 μg/m3 (23) 13.3 μg/m3 (53) 53.0
 
March 17, 2019, 7 a.m. 27.0 ppb (25) 2.0 ppb (2) N/A 24.0 ppb (22) N/A N/A N/A 0.3 ppb (3) 23.0 μg/m3 (21) 10.6 μg/m3 (44) 44.0
 
March 17, 2019, 6 a.m. 26.0 ppb (24) 3.0 ppb (3) N/A 22.0 ppb (20) N/A N/A N/A 0.2 ppb (2) 22.0 μg/m3 (20) 10.6 μg/m3 (44) 44.0
 
March 17, 2019, 5 a.m. 51.0 ppb (47) 15.0 ppb (14) N/A 36.0 ppb (33) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (28) 14.6 μg/m3 (56) 56.0
 
March 17, 2019, 4 a.m. 81.0 ppb (79) 39.0 ppb (36) N/A 41.0 ppb (38) N/A N/A N/A 0.8 ppb (9) 33.0 μg/m3 (30) 14.6 μg/m3 (56) 79.0
 
March 17, 2019, 3 a.m. 68.0 ppb (65) 32.0 ppb (30) N/A 35.0 ppb (32) N/A N/A N/A 0.8 ppb (9) 43.0 μg/m3 (39) 18.7 μg/m3 (64) 65.0
 
March 17, 2019, 2 a.m. 35.0 ppb (32) 5.0 ppb (5) N/A 29.0 ppb (27) N/A N/A N/A 0.5 ppb (6) 62.0 μg/m3 (54) 16.5 μg/m3 (60) 60.0
 
March 17, 2019, 1 a.m. 29.0 ppb (27) 3.0 ppb (3) N/A 25.0 ppb (23) N/A N/A N/A 0.3 ppb (3) 23.0 μg/m3 (21) 9.5 μg/m3 (40) 40.0
 
March 17, 2019, midnight 15.0 ppb (14) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.1 ppb (1) 16.0 μg/m3 (15) 5.9 μg/m3 (25) 25.0
 
March 16, 2019, 11 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 6.1 μg/m3 (25) 25.0
 
March 16, 2019, 10 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 5.6 μg/m3 (23) 23.0
 
March 16, 2019, 9 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.0 ppb (0) 14.0 μg/m3 (13) 5.9 μg/m3 (25) 25.0
 
March 16, 2019, 8 p.m. 11.0 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 16.0 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
March 16, 2019, 7 p.m. 13.0 ppb (12) 6.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 15.0 μg/m3 (14) 5.5 μg/m3 (23) 23.0
 
March 16, 2019, 6 p.m. 14.0 ppb (13) 7.0 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.1 ppb (1) 14.0 μg/m3 (13) 5.8 μg/m3 (24) 24.0
 
March 16, 2019, 5 p.m. 12.0 ppb (11) 6.0 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.1 ppb (1) 18.0 μg/m3 (16) 4.8 μg/m3 (20) 20.0
 
March 16, 2019, 4 p.m. 15.0 ppb (14) 7.0 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.0 ppb (0) 12.0 μg/m3 (11) 3.1 μg/m3 (13) 14.0
 
March 16, 2019, 3 p.m. 31.0 ppb (29) 17.0 ppb (16) N/A 13.0 ppb (12) N/A N/A N/A 0.2 ppb (2) 17.0 μg/m3 (15) 3.7 μg/m3 (15) 29.0
 
March 16, 2019, 2 p.m. 31.0 ppb (29) 10.0 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.1 ppb (1) 20.0 μg/m3 (18) 5.7 μg/m3 (24) 29.0